Origin of Phrases - K
King of the hill
Meaning: To be the best at something.
Example: Tell me who is the king of the hill around here, so I will know who to knock off.
Origin: This goes back to battlefields of long ago. All sides fought to conquer the high ground, the hills. This was often the best vantage point and the point of most advantage. Whichever unit won or took the hill was likely winning.